Mount points for distributed sap server installation

[Former Member]

Dear Experts,

I prepared below mount points for disributed sap PI7.4 single stack installation.

Please let me know is it correct or not & also let me know that which mount points has to be share between CI & DI.

Regards,

Prabhat Mishra

PI (CI)		PI (DI1)		PI (DI2)
File System	Space(GB)	File System	Space (GB)	File System	Space (GB)
/usr/sap	40	/usr/sap	40	/usr/sap	40
/usr/sap/<SID>	50	/usr/sap/<SID>	50	/usr/sap/<SID>	50
/usr/sap/trans	40	/usr/sap/trans	40	/usr/sap/trans	40
/sapmnt/<SID>	80	/sapmnt/<SID>	80	/sapmnt/<SID>	80
/dump	60	/dump	30	/dump	30
/piarchive	100
/appdata	100
DATABASE File system
File System	Space (GB)
/oracle	50
/oracle/<SID>	30
/oracle/<SID>/11204	30
/oracle/<SID>/mirrlogA	10
/oracle/<SID>/mirrlogB	10
/oracle/<SID>/oraarch	50
/oracle/<SID>/origlogA	10
/oracle/<SID>/origlogB	10
/oracle/<SID>/sapdata1	100
/oracle/<SID>/sapdata2	100
/oracle/<SID>/sapdata3	100
/oracle/<SID>/sapdata4	100
/oracle/<SID>/sapreorg	10
/oracle/client	10
/oracle/stage/112_64	20
/sapmnt/<SID>	30
/usr/sap	30
/dump	30

[Former Member · Accepted solution]

Hi Prabhat,

The mount points looks good. and below mount points should be shared along CI &DB servers:-

/usr/sap/<SID>

/oracle/client/

And for Dialog instances you can use the below mount points shared across using NFS.

/usr/sap/<SID> --> can be local too

/sapmnt/<SID> --> shared

/usr/sap/trans

/dump

/appdata

/piarchive

Let us know if this helps.

Regards,

Ram

[Former Member · Accepted solution]

Dear Ram,

please let me know that I have to create /oracle/client/ mount point in CI server also.

Regards,

Prabhat

[Former Member · Accepted solution]

Hi Prabhat,

The /oracle/Client has to be created seprately and you can keep it as nfs share across all servers.

if you dont have a specific moount point then this folder gets created locally under /root structrure

Also this contains the oracle insta clinet binaries.

Regards,

Ram

[isaias_freitas · Accepted solution]

Hi,

You should not have /usr/sap/<SID> shared.

This is to avoid performance issues and other issues that could occur if the NFS presents problems.

/sapmnt/<SID> must be shared amongst all SAP servers (CI and all DIs).

I agree with Reagan Benjamin, you should read the installation guide. It has all the mappings you are looking for.

Regards,

Isaías

[Reagan]

I don't understand why you need /usr/sap and /usr/sap/<SID>. The /sapmnt/<SID> should be on CI node and mounted on other nodes (DI1 and DI2). The /oracle/client should be on all nodes where SAP runs and not on the DB node. Means the /oracle/client should be present on CI, DI1 and DI2. The most surprising thing is that you are excessively allocating a lot of space for all the file systems. Additionally you would require /oracle/<SID>/sapcheck and /oracle/<SID>/sapbackup file systems or directories.

[Former Member]

Dear Reagan Benjamin,

We are planning Production server for 10 years so that I allocated this much space.

I am going to do SAP installation first time on Linux & distributed environment that's why I don't have idea about mount points.

It will be helpful if you guide me for mount points in below format:

Mount point CI

Mount point DI1

Mount point DI2

Mount point DB

WR/

Prabhat

[Reagan]

In 10 years only the database will grow and not the filessystems where the SAP and Oracle binaries are kept. The Oracle data files will be kept in the /oracle/<SID>/sapdataX filesystems and you should have enough space there for the database to grow.

The filesystems like /usr/sap/trans and /sapmnt/<SID> are not required seperately on all the nodes. They should be created on the CI node and mounted on the AS nodes if the AS's are running on different machines. You do not need /usr/sap and /sapmnt/<SID> on the DB server. I do not know the importance of other filesystems like /dump, /appdata because I never needed those.

DB node

DATABASE File system

File System Space (GB)

/oracle 1 GB

/oracle/<SID> 1 GB

/oracle/<SID>/11204 10 GB

/oracle/<SID>/mirrlogA 2 GB

/oracle/<SID>/mirrlogB 2 GB

/oracle/<SID>/origlogA 2 GB

/oracle/<SID>/origlogB 2 GB

/oracle/<SID>/sapdata1 100 GB

/oracle/<SID>/sapdata2 100 GB

/oracle/<SID>/sapdata3 100 GB

/oracle/<SID>/sapdata4 100 GB

/oracle/<SID>/oraarch 50 GB

/oracle/<SID>/saparch 1 GB

/oracle/<SID>/sapreorg 2 GB

/oracle/<SID>/sapcheck 2 GB

/oracle/<SID>/sapbackup 2 GB

/oracle/stage/112_64 20 GB

SAP

On CI node

/usr/sap/trans 40 GB

/sapmnt/<SID> 5 GB

/usr/sap/<SID> 5 GB

/oracle/client 1 GB

On AS nodes

/usr/sap/<SID> 5 GB

/oracle/client 1 GB

The above allocation is just my recommendation but if you want to go ahead with the allocation which you have mentioned above then it is upto you.

The important thing is that you do not create the /usr/sap/trans /sapmnt/SID filesystems on all nodes separately. They should be on one node and mounted to others.

[Former Member]

Dear Reagan Benjamin,

DB ,CI, DI1, DI2 all are on separate machine.

As I understand with your answer, prepared mount points as below:

from CI I have to share /usr/sap/trans,/sapmnt/<SID>

CI:

/usr/sap

/usr/sap/<SID>

/usr/sap/trans

/sapmnt/<SID>

/dump

/piarchive

/<SID>data

/oracle/client 

DI1:

/usr/sap

/usr/sap/<SID>

/oracle/client

/dump

DI2:

/usr/sap

/usr/sap/<SID>

/oracle/client

/dump

DB server:

/oracle

/oracle/<SID>

/oracle/<SID>/11204

/oracle/<SID>/mirrlogA

/oracle/<SID>/mirrlogB

/oracle/<SID>/oraarch

/oracle/<SID>/origlogA

/oracle/<SID>/origlogB

/oracle/<SID>/sapdata1

/oracle/<SID>/sapdata2

/oracle/<SID>/sapdata3

/oracle/<SID>/sapdata4

/oracle/<SID>/sapreorg

/oracle/<SID>/sapbackup

/oracle/client

/oracle/stage/112_64

/sapmnt/<SID>

/usr/sap

/dump

wr/

Prabhat

[Reagan]

My previous replies contain all the answers you are looking for. Take time to read the installation guide. It has all the information you are looking for.